Auxiliary safety system of grinding machine

Abstract

The utility model provides an auxiliary safety system of a grinding machine, which belongs to the technical field of use safety of the grinding machine and comprises an auxiliary safety system main loop, and the auxiliary safety system main loop is connected with an auxiliary safety system control loop and comprises a three-phase power supply. The three-phase power supply is connected with a contact of a contactor, a switch and a grinding machine in sequence, and the grinding machine is grounded; the three-phase power supply is also connected with a fuse in parallel, the fuse is connected with a transformer, the transformer is connected with an auxiliary safety system control loop, the auxiliary safety system control loop comprises a first control loop, and the first control loop is connected with a second control loop in parallel; safety protection measures of the grinding machine can be perfected through the auxiliary safety system main loop, the auxiliary safety system control loop and the specific structures of the loops, safety protection of the grinding machine is improved, and operation safety of the grinding machine is effectively controlled and improved.

Description

Technical Field

[0001] This utility model relates to the field of safety technology for grinding machines, and specifically to an auxiliary safety system for grinding machines. Background Technology

[0002] Grinding wheels, as a common industrial piece of equipment, play an important role in daily metal processing, grinding, and finishing operations. However, as described in the background section, grinding wheels present a series of safety hazards during use. These hazards may not only threaten the safety of operators but also adversely affect the production site.

[0003] For example, grinding machines generate sparks and debris during operation. If operators are not wearing safety goggles, these flying objects can damage their eyes or even cause blindness. Proper positioning is crucial for safe operation; improper positioning, such as being too close to the grinding wheel or standing tangentially to it, can result in injury from accidental wheel breakage or flying debris. Failure to shut down the grinding machine promptly after use can lead to dangerous situations due to accidental activation or disuse. Grinding machines are typically designed for single-person operation; multiple operators working simultaneously can cause confusion and interference, increasing the risk of accidents. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary safety system for grinding machines to overcome the problems existing in the prior art. This utility model can improve the safety management of grinding machine operation, reduce hidden dangers at the work site, and improve equipment safety protection.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A grinding wheel machine auxiliary safety system includes an auxiliary safety system main circuit, and an auxiliary safety system control circuit is connected to the auxiliary safety system main circuit.

[0007] The main circuit of the auxiliary safety system includes a three-phase power supply, which is connected in sequence to the contacts of a contactor, a switch, and a grinding wheel. The grinding wheel is grounded. The three-phase power supply is also connected in parallel to a fuse, which is connected to a transformer. The transformer is connected to the control circuit of the auxiliary safety system.

[0008] The auxiliary safety system control loop includes a first control loop, and a second control loop is connected in parallel with the first control loop;

[0009] Furthermore, the three-phase power supply is connected in sequence to the contactor contacts, switch, and grinding wheel via three-phase lines;

[0010] Furthermore, the contacts of a switch and a contactor are connected in sequence before the control circuit breaker of the grinding machine;

[0011] Furthermore, the first control circuit includes a first pressure sensing pad, a first gravity relay, and a contactor coil connected in sequence to the transformer;

[0012] Furthermore, the first gravity relay includes a first relay coil, through which a first normally open contact and a first normally closed contact are connected in sequence;

[0013] Furthermore, the first pressure-sensing pad is installed on the front side of the grinding wheel;

[0014] Furthermore, the coil of the contactor is connected to a transformer;

[0015] Furthermore, the second control circuit includes a second pressure sensing pad and a second gravity relay connected in sequence to the transformer;

[0016] Furthermore, the second gravity relay includes a second relay coil, through which a second normally open node and a second normally closed node are connected in sequence;

[0017] Furthermore, the second pressure-sensing pad is installed on the other side of the front of the grinding wheel.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] This utility model provides an auxiliary safety system for a grinding machine. Through the main circuit and control circuit of the auxiliary safety system, as well as the specific structure of the circuit, the safety protection measures of the grinding machine can be improved, the safety protection of the grinding machine can be enhanced, and the operational safety of the grinding machine can be effectively controlled and improved.

[0020] Furthermore, by setting up a first control circuit and a second control circuit, when an operator stands alone on the first pressure sensing pad or the second pressure sensing pad, the first normally open node of the first gravity relay or the second normally open node of the second gravity relay closes, the control contactor engages, and the grinding wheel starts running. When two people stand on the first pressure sensing pad and the second pressure sensing pad at the same time, the grinding wheel is powered off and stops, thus eliminating the safety hazards of multiple people working together.

[0021] Furthermore, by placing the first pressure sensing pad and the second pressure sensing pad on the front sides of the grinding wheel, the operator is prevented from standing in the wrong position facing the direction of the grinding wheel's rotation. When the operator leaves, the grinding wheel is powered off and shut down, eliminating energy consumption and equipment accidents caused by not shutting it down in time after use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main circuit wiring of an auxiliary safety system for a grinding wheel machine according to this utility model.

[0023] Figure 2This is a schematic diagram of the control circuit wiring of an auxiliary safety system for a grinding wheel machine according to this utility model.

[0024] Figure 3 This is a wiring diagram of the first gravity relay and the second gravity relay in the control circuit of an auxiliary safety system for a grinding wheel machine according to this utility model.

[0025] In the diagram, 1-contactor; 2-switch; 3-grinding machine; 4-fuse; 5-transformer; 6-first relay coil; 61-first normally open contact; 62-first normally closed contact; 7-second relay coil; 71-second normally open contact; 72-second normally closed contact; 8-first pressure sensing pad; 9-second pressure sensing pad. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0028] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figure 1As shown, this utility model provides an auxiliary safety system for a grinding wheel machine, including a main circuit for the auxiliary safety system, which is connected to an auxiliary safety system control circuit. The main circuit for the auxiliary safety system includes a three-phase power supply, which is connected in sequence to the contacts of a contactor 1, a switch 2, and a control circuit breaker of the grinding wheel machine 3 via three phase lines. The grinding wheel machine 3 is grounded. The three-phase power supply is also connected in parallel to a fuse 4, which is connected to a transformer 5. The transformer 5 is connected to the auxiliary safety system control circuit.

[0032] like Figure 2 As shown, the auxiliary safety system control circuit includes a first control circuit, with a second control circuit connected in parallel to the first control circuit. The first control circuit includes a first pressure sensing pad 8, a first gravity relay, and a coil of a contactor 1 connected in sequence to the transformer 5. The coil of the contactor 1 is connected to the transformer 5. The first gravity relay includes a first relay coil 6, through which a first normally open node 61 and a first normally closed node 62 are connected in sequence. The first pressure sensing pad 8 is installed on one side of the front of the grinding wheel 3. The second control circuit includes a second pressure sensing pad 9 and a second gravity relay connected in sequence to the transformer 5. The second gravity relay includes a second relay coil 7, through which a second normally open node 71 and a second normally closed node 72 are connected in sequence. The second pressure sensing pad 9 is installed on the other side of the front of the grinding wheel 3.

[0033] Example 2:

[0034] This utility model provides an auxiliary safety system for a grinding wheel machine, including an auxiliary safety system main circuit, and an auxiliary safety system control circuit connected to the auxiliary safety system main circuit.

[0035] like Figure 1 As shown, the main circuit of the auxiliary safety system includes a three-phase power supply. The three-phase power supply is connected in sequence to the contacts of contactor 1, switch 2, and control circuit breaker of grinding wheel 3 through three-phase lines L1, L2, and L3. Grinding wheel 3 is grounded. The three-phase power supply is also connected in parallel to fuse 4. Fuse 4 is connected to transformer 5. Transformer 5 is connected to the auxiliary safety system control circuit.

[0036] Preferably, transformer 5 is AC380V / 36V.

[0037] like Figure 2As shown, the auxiliary safety system control circuit includes a first control circuit, with a second control circuit connected in parallel. The first control circuit includes a first pressure sensing pad 8, a first gravity relay, and a contactor 1 coil connected in sequence to transformer 5's 1# terminal. The contactor 1 coil is connected to transformer 5's 2# terminal. The first gravity relay includes a first relay coil 6, through which a first normally open terminal 61 and a first normally closed terminal 62 are connected in sequence. The second control circuit includes a second pressure sensing pad 9 and a second gravity relay connected in sequence to transformer 5. The second gravity relay includes a second relay coil 7, through which a second normally open terminal 71 and a second normally closed terminal 72 are connected in sequence. By setting up the first and second control circuits, when the operator stands alone... When the first normally open contact 61 of the first gravity relay or the second normally open contact 71 of the second gravity relay is closed on the first pressure sensing pad 8 or the second pressure sensing pad 9, the control contactor 1 is engaged, and the grinding machine 3 starts to run. When two people stand on the first pressure sensing pad 8 and the second pressure sensing pad 9 at the same time, the grinding machine 3 is powered off and stopped, which can eliminate the safety hazards of multiple people working. The first pressure sensing pad 8 is installed on one side of the front of the grinding machine 3, and the second pressure sensing pad 9 is installed on the other side of the front of the grinding machine 3. By setting the first pressure sensing pad 8 and the second pressure sensing pad 9 on the front sides of the grinding machine 3 respectively, the incorrect position of the operator facing the rotation direction of the grinding wheel 3 is avoided. When the operator leaves, the grinding machine 3 is powered off and stopped, which can eliminate the energy consumption and equipment accidents caused by not shutting down in time after use.

[0038] The structure and working principle of this utility model will be further explained below:

[0039] The purpose of this utility model is to provide an auxiliary safety system for a grinding machine. When using this device, when an operator stands alone on the first pressure sensing pad 8, the first normally open terminal 61 of the first gravity relay closes, the control contactor 1 is activated, and the grinding machine 3 runs.

[0040] When an operator stands alone on the second pressure sensing pad 9, the second normally open terminal 71 of the second gravity relay closes, the control contactor 1 engages, and the grinding wheel runs.

[0041] When two operators stand on the first pressure sensing pad 8 and the second pressure sensing pad 9 at the same time, the first normally open terminal 61 of the first gravity relay and the second normally open terminal 71 of the second gravity relay close simultaneously, and the first normally closed terminal 62 and the second normally closed terminal 72 open simultaneously. The contactor 1 cannot be engaged, and the grinding wheel 3 cannot run.

[0042] When operating the machine, personnel must stand on the gravity sensing pad to start the grinding machine 3. If multiple people are working at the same time and stand on the pressure sensing pad, the grinding machine 3 will be powered off and stopped. When the operator leaves, the grinding machine 3 will be powered off and stopped. The gravity sensing pad is set on both sides of the front of the grinding machine 3 to avoid the operator standing in the wrong position facing the direction of the grinding wheel's rotation.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A grinding wheel machine auxiliary safety system, characterized in that, This includes the main circuit of the auxiliary safety system, which is connected to the control circuit of the auxiliary safety system. The auxiliary safety system main circuit includes a three-phase power supply, which is connected in sequence to the contacts of contactor (1), switch (2), and grinding wheel (3). The grinding wheel (3) is grounded, and the control circuit breaker of the grinding wheel (3) is connected in sequence to the contacts of switch (2) and contactor (1). The three-phase power supply is also connected in parallel to a fuse (4), which is connected to a transformer (5). The transformer (5) is connected to the auxiliary safety system control circuit, and the coil of contactor (1) is connected to the transformer (5). The auxiliary safety system control loop includes a first control loop, and a second control loop is connected in parallel with the first control loop; The first control circuit includes a first pressure sensing pad (8), a first gravity relay and a contactor (1) coil connected in sequence to the transformer (5). The first gravity relay includes a first relay coil (6), and a first normally open node (61) and a first normally closed node (62) are connected in sequence through the first relay coil (6). The second control circuit includes a second pressure sensing pad (9) and a second gravity relay connected in sequence to the transformer (5). The second gravity relay includes a second relay coil (7), through which a second normally open node (71) and a second normally closed node (72) are connected in sequence.

2. The auxiliary safety system for a grinding wheel machine according to claim 1, characterized in that, The three-phase power supply is connected in sequence to the contacts of the contactor (1), the switch (2), and the grinding wheel (3) via the three-phase phase lines.

3. The auxiliary safety system for a grinding wheel machine according to claim 1, characterized in that, The first pressure sensing pad (8) is installed on the front side of the grinding wheel (3).

4. The auxiliary safety system for a grinding wheel machine according to claim 1, characterized in that, The second pressure sensing pad (9) is installed on the other side of the front of the grinding wheel (3).

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